Storage-battery separator.



' UNITED STATES WILLIAM TAY OR, or PHILADELPHIA,

TION OF NEW JERSEY.

PATENT 'orrrca.

PENNSYLVANIA, ASSIGNOB T0 TI-IE ELECTRIC STORKGE BATTERY COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORA- STORAGE-BATTERY SEPARATOB. 7

No Drawing. Application filed July 8,

To all whom it may concern:

Be it known that I, WILLIAM TAYLOR, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Storage-Battery Separators, of which the following is a specification.

I have discovered in \certain woods a quality common to them all or to them generally, as distinguished from otherwoods and materials,-and such quality or characteristic adapts them peculiarly to storage battery separators. .The woods possessed of the quality or characteristic that adapts them peculiarly to storage battery separators are known generally under the tribe name of Tawodz'neoz, andmore specifically as genera Tamodium and Sequoia and still more specifically as species T amodc'um distz'chum- (American cypress) and Sequoia sem'percirehs (California red wood). The quality common to these woods that adapts them to storage battery separators includes the property of not swelli ol uently v when again dried, of not shrinking, warping or twisting to an extent that unfits themfor use as separators when dry or dried. Dry separators of this material can be used without the customary allowance for swelling when immersed in the electrolyte of the battery or other soaking solution. This quality also includes the property of these woods which is due to their density and which causes them to act as a diaphragm impervious to battery sediment yet they are sufiiciently porous for absorbing the electro lyte and permitting of the free passage of current; and this quality includes substan-' tial freedom from deleterious organic mat ter such, for example, as acetic acid whichinjuriously attacks the positive pole plates; and this quality further includes sufficient mechanical strength and the property of re-. Tisting the destructive action of the electroyte.

From the foregoing it is evident that the separators of this invention meet all the re quirements of use in a storage battery and further that they can be dried even though they may have been previously treated with acid or alkaline solutions, or both, followed:

Specification of Letters Patent.

ng when wet and conse;

1911. Serial No. 637,531.

the separators are treated 'in the manner above referred'to they still retain ample batteryt However, these woods contain so little deleterious matter such as would attreatment at all or with very little treatment.

For the .sake of further explanation it may he said that thequality or characteristic which I have discovered in the certain woods to which reference has been made is that they can be soaked. until they are flimsy and then dried again satisfactorily.

I do not claim in this application astorage battery separator made of woods of the tribe Tawodz'neaz generally or of the genus tic/mm since the same forms th'esubject matter of my application executed of even gate herewith andserially numbered 637,532

What I claim is:

1. A storagebattery separator made of wood of the genus Sequoia.

2. A storage battery separator made of wood of the species Sequoia scmperoirens.

3. A storage battery separator made of dry wood of the genus Sequoia.

4. A storage battery separator made of dry wood of the species Sequoia comparoirens.

5. A storage battery separator made of treated and dried wood of the genus Sequoia.

6: A. storage battery separator made of treated and dried wood of the species Sequoia scmpcrrirens.

In testimony whereof I have hereunto signed my name. WILLIAM-TAYLOR.

'- -Witnes ses:

Bruce FORD, Gno. M. HOWARD.

Patented Dec l 36, 1911.

The strength of theiwo0ds from whichfI' make the separators as so great that even if mechanical strength for use in a storage.

tack lead that they can be used without any T amodium ,or of the species Tamodz'wm dis- H 4am um 

